EP 2824908 B1 20190417 - Image reading apparatus and image forming apparatus
Title (en)
Image reading apparatus and image forming apparatus
Title (de)
Bildlesevorrichtung und Bilderzeugungsvorrichtung
Title (fr)
Appareil de lecture d'images et appareil de formation d'images
Publication
Application
Priority
JP 2013039724 A 20130228
Abstract (en)
[origin: US2014240796A1] An image reading apparatus includes a light emitting diode (LED), a carriage, light receiving elements, a clamp circuit, an A/D convertor, and an image correction unit. The image correction unit is configured to: detect a document area where the reflected light is abnormal by comparing first image data with second image data; and replace the first image data corresponding to the abnormal document area with third image data. The first image data is generated by movement of the carriage in a sub-scanning direction of a first direction. The second image data is generated by movement of the carriage in the sub-scanning direction of a second direction at a reduced luminescence level of the capturing light illuminated on the document compared with a luminescence level in the movement of the carriage in the first direction. The third image data is the second image data where at least brightness is adjusted.
IPC 8 full level
H04N 1/028 (2006.01)
CPC (source: EP US)
H04N 1/00005 (2013.01 - EP US); H04N 1/02815 (2013.01 - EP US); H04N 1/02885 (2013.01 - EP US); H04N 1/1017 (2013.01 - EP US); H04N 1/40056 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2014240796 A1 20140828; US 9106783 B2 20150811; CN 104023164 A 20140903; CN 104023164 B 20170301; EP 2824908 A1 20150114; EP 2824908 B1 20190417; JP 2014168192 A 20140911; JP 5799040 B2 20151021
DOCDB simple family (application)
US 201414192901 A 20140228; CN 201410047133 A 20140211; EP 14156781 A 20140226; JP 2013039724 A 20130228